When you are using the terminal and encounter the following warning
warning: setlocale: LC_ALL: cannot change locale (en_US.UTF-8),
you can not figure it out and you are most likely confused, this
article would help you solve this problem.
$ sudo locale
Edit the configuration file for
$ sudo vim /etc/locale.gen
This file lists locales that you wish to have built. You can find a list of valid supported locales at /usr/share/i18n/SUPPORTED, and you can add user defined locales to /usr/local/share/i18n/SUPPORTED. If you change this file, you need to rerun locale-gen.
Add or uncomment the locale
en_US.UTF-8 UTF-8 and rerun
$ sudo locale-gen
This error happens when your terminal settings local locale environment variables which doesn’t have the specific locale you requested, to solve this problem you should configure and generate the locales.